Abstract:
:The purpose of this investigation was to identify physiological predictors of maximum treadmill walking performance (MWD) in patients with intermittent claudication. Forty-five claudicants performed a graded treadmill test to determine MWD, peak oxygen uptake, and gas exchange threshold. Calf muscle oxygenation (StO (2)) at 1 min and time to minimum StO (2) were also measured using near-infrared spectroscopy. On other occasions, peak calf blood flow, resting ankle-brachial index, and pulmonary oxygen uptake kinetics during steady-state walking were assessed. A forward stepwise multiple regression analysis was performed to determine predictors of MWD. A regression model comprising time to minimum StO (2), peak oxygen uptake, and StO (2) at 1 min explained 64% of the variation in MWD. The results suggest that cardiopulmonary fitness and the ability to match oxygen delivery to metabolic demand are important determinants of walking performance in claudicants, and that certain near-infrared spectroscopy variables might be useful in studies that evaluate the mechanisms of clinical improvement with different treatment interventions.
journal_name
Int J Sports Medjournal_title
International journal of sports medicineauthors
Tew GA,Nawaz S,Blagojevic M,Zwierska I,Saxton JMdoi
10.1055/s-0028-1111110subject
Has Abstractpub_date
2009-06-01 00:00:00pages
467-72issue
6eissn
0172-4622issn
1439-3964journal_volume
30pub_type
杂志文章abstract::High-speed running and sprinting training play an important role in the development of physical capabilities, sport-specific performance and injury prevention among soccer players. This commentary aims to summarize the current evidence regarding high-speed running and sprinting training in professional soccer and to i...
journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/a-1302-7968
更新日期:2020-12-08 00:00:00
abstract::Hemoglobin oxygen binding properties and acid-base status were investigated in Colombian athletes (A) and controls (C) from Cali (C-1000 m) and Bogotá (B-2600 m). [Hb] and Hct values were not influenced by altitude, but Hct was lower in the blood of athletes (in Cali 2.6%, in Bogotá 1.4%). Both training and altitude p...
journal_title:International journal of sports medicine
pub_type: 杂志文章,评审
doi:10.1055/s-2007-1024755
更新日期:1990-02-01 00:00:00
abstract::The postural control of ten male soccer players with functional instability (FI) of the ankle joint, i.e., recurrent sprains and/or a feeling of giving way, was studied before and after ankle disk training. Postural control was studied by means of stabilometry and an optoelectronic movement recording system. In the pr...
journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-2007-1024996
更新日期:1988-04-01 00:00:00
abstract::This study examined the relationship between ratings of perceived exertion (RPE, CR-10), heart rate (HR), peak blood lactate (La peak), and immersion (IM) parameters in 17 elite synchronized swimmers performing 30 solo and duet routines during competition. All were video recorded (50 Hz) and an observational instrumen...
journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-0033-1353177
更新日期:2014-05-01 00:00:00
abstract::The purpose was to analyze the influence of oral contraceptive use on body composition and strength levels in trained women. Twenty-three resistance-trained women participated in this study (age=27.4±3.4 years; fat mass=28.0±5.0%; BMI=22.9±2.7 kg∙m-2). Subjects performed an 8-week non-linear resistance-training progra...
journal_title:International journal of sports medicine
pub_type: 临床试验,杂志文章
doi:10.1055/a-0985-4373
更新日期:2019-12-01 00:00:00
abstract::The aim of the present study was to investigate the relationships between heart rate variability (HRV) changes and both training variations and performances in elite swimmers. A secondary purpose was to measure catecholamine urinary excretion in elite swimmers to validate the HRV indices of sympathetic activity during...
journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-2006-924490
更新日期:2007-05-01 00:00:00
abstract::There are ethical objections to inducing cumulative muscle damage and associated decrements of performance deliberately in a healthy athlete. Available data on acute and chronic over-exertion thus include the changes of immune response observed following a single bout of exhausting exercise, sequential observations ma...
journal_title:International journal of sports medicine
pub_type: 杂志文章,评审
doi:10.1055/s-2007-971898
更新日期:1998-04-01 00:00:00
abstract::The use of aero style handlebars has gained popularity in triathlons and individual time trial events recently. The effect of using these handlebars has only been examined during short term exercise. It was the aim of this investigation to compare time to exhaustion and selected measures of ventilation, gas exchange a...
journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-2007-1021013
更新日期:1994-01-01 00:00:00
abstract::Thirty-three untrained subjects of both sexes, 18-31 years of age, performed several tests on cycle ergometers. Maximal aerobic power (MAP) was obtained in a progressive work test. Maximal aerobic capacity (MAC) was measured in a 90-min maximal test and was computed as the total work output during that period. Two all...
journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-2008-1025864
更新日期:1985-12-01 00:00:00
abstract::In 1988 Segura and Ventura (14) reported that 1.2 g of L-Tryptophan (L-TRY) supplementation increased total exercise time by 49.4% when the subjects were running at 80% of maximal oxygen uptake (VO2max). In human performance research, acute improvements of that category are rather uncommon. Both for this reason and be...
journal_title:International journal of sports medicine
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1055/s-2007-1021302
更新日期:1992-08-01 00:00:00
abstract::The aim of the study was to examine the associations between maximal and submaximal field tests with match physical activity and biological maturation in youth football players. Sixty-eight youth football players (U14, U15, U16, U17) performed maximal and submaximal field endurance tests. Biological maturity was estim...
journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/a-0938-5431
更新日期:2019-09-01 00:00:00
abstract::We studied 12 highly trained athletes, 6 male ice-hockey players and 6 cross-country skiers (2 females, 4 males). All of them participated in a maximal electrically braked bicycle ergometer test in a hypobaric chamber at the simulated altitude of 3000m (520 mmHg) and in normobaric conditions two days apart in random o...
journal_title:International journal of sports medicine
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1055/s-2007-972968
更新日期:1995-02-01 00:00:00
abstract::Since doping improves athletic performance, anti-doping policies should have the opposite effect. This analysis examined whether changes in the speed of major cycling races reflect recent anti-doping efforts. Average speeds of 5 (th) place finishers of the Tour de France, Giro d'Italia, and Vuelta a España cycling rac...
journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-0030-1247593
更新日期:2010-04-01 00:00:00
abstract::The oxygen uptake (VO2) attained during a constant speed 800-m pace trial on a treadmill is less than the maximal VO2 (VO2max) in male middle-distance runners with a high VO2max (i.e., > 65 ml x kg (-1) x min (-1)). We therefore investigated whether the VO2 attained was influenced by the pacing strategy adopted. Eight...
journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-2005-837468
更新日期:2006-01-01 00:00:00
abstract::One hundred fourteen subjects (34 +/- 8 years) without any competition background took part in an endurance training study to be completed after 1.5 years with running a marathon. Ultimately, 60 males and 18 females achieved that goal. The training program, carefully supervised, was divided into three phases with a ma...
journal_title:International journal of sports medicine
pub_type: 临床试验,杂志文章
doi:10.1055/s-2007-1024960
更新日期:1989-10-01 00:00:00
abstract::Creatine supplementation has become a common practice among competition athletes participating in different sports over the last few years. The mechanism by which supplementary creatine could have potential ergogenic effects would be an increased muscle creatine and phosphocreatine concentration, leading to a higher r...
journal_title:International journal of sports medicine
pub_type: 杂志文章,meta分析
doi:10.1055/s-2007-972670
更新日期:1997-10-01 00:00:00
abstract::The purpose of this study was to analyze the validity and the reliability of the intensity ranges, number of actions and changes of direction measured by a commercial inertial measurement unit. Eleven elite youth futsal players performed a circuit with different type of displacements as sprinting, running at low-mediu...
journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/a-1244-9985
更新日期:2020-10-05 00:00:00
abstract::Physical exercise activates blood coagulation and enhances fibrinolytic activity. To investigate whether these activations of blood coagulation and fibrinolysis are balanced post-exercise and during the period of recovery, 11 moderately active young men were examined immediately after a standardised cycle ergometer te...
journal_title:International journal of sports medicine
pub_type: 临床试验,杂志文章
doi:10.1055/s-2007-971109
更新日期:1999-04-01 00:00:00
abstract::The aim of the present study was to identify anthropometric, physical, coordinative and ice-skating specific characteristics that discriminate young elite ice skaters from non-elite skaters and their non-skating peers. 32 skaters aged 9-12 years old (11 elites and 21 non-elites) voluntarily participated in the study. ...
journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-0042-100280
更新日期:2016-06-01 00:00:00
abstract::During the world junior speed skating championship 2002 all athletes (60 males, 56 females) were subjected to hematologic blood testing one day before the competition as requested by International Skating Union--ISU. This study aimed to obtain hematological reference values for junior athletes, whilst the influence of...
journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-2005-865676
更新日期:2006-04-01 00:00:00
abstract::We have studied the effect of exercise on the percentage of free plasma estradiol 17-beta (E2) and testosterone (T) in 13 untrained (UT) and 8 trained (marathon runners, MR) eumenorrheic women. All women performed a standardized bicycle ergometer (UT) or treadmill (MR) test in the follicular and luteal phases of their...
journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-2008-1025721
更新日期:1987-12-01 00:00:00
abstract::Leptin, the product of the ob-gene, is specifically released by adipocytes. In addition to its metabolic function it seems to affect the feedback-mechanisms of the hypothalamic-pituitary-gonadal-axis. We studied 13 female juvenile elite gymnasts with anorexia athletica (AA) and 9 female patients with anorexia nervosa ...
journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-1999-8834
更新日期:1999-10-01 00:00:00
abstract::The aim of this study was to evaluate the effect of swimming exercise, without overloading, on the biomechanical parameters of the calcaneal tendon of rats. 27 male Wistar rats (70 days) were distributed randomly into 2 groups, Control Group (CG; n=15) with restricted movements inside the cage and Swimming Group (SG; ...
journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-0033-1345130
更新日期:2013-12-01 00:00:00
abstract::The effect of clinically used doses of propranolol, atenolol, nifedipine, propranolol plus nifedipine, and atenolol plus nifedipine on thermoregulatory responses of 11 healthy men was studied during 2-h block-stepping in heat. Drug intervention did not alter ventilation during exercise. In contrast, propranolol and at...
journal_title:International journal of sports medicine
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1055/s-2008-1025631
更新日期:1987-02-01 00:00:00
abstract::The purpose of this report is to study serotonin reuptake of the brain in a severely overtrained athlete by using single-photon emission computed tomography (SPECT). A 26-year-old team athlete increased his training volume (by 200 %) and intensity markedly in a new high-level team. After two months, he started to feel...
journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-2004-819952
更新日期:2004-02-01 00:00:00
abstract::The aim of the study was to compare the effects of two different models of altering the frequency of strength training sessions of females. The "regular training" (RT) consisted of one training unit every third day over the whole menstrual cycle. The "menstrual cycle triggered training" (MCTT) was characterized by wor...
journal_title:International journal of sports medicine
pub_type: 临床试验,杂志文章
doi:10.1055/s-2007-973052
更新日期:1995-11-01 00:00:00
abstract::Circulatory leukocytes vary significantly in response to acute bouts of exercise. However, little is known concerning the adaptability of this response to chronic intense exercise training. We investigated the circulating leukocytic response to acute exercise in trained athletes during a 28-day intense exercise traini...
journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-2007-1021252
更新日期:1992-02-01 00:00:00
abstract::The aim of this study was to examine the relationship between anthropometry, physical capacity, and sprint swimming performance in swimmers of both genders aged 12 - 14 years old. Anthropometric characteristics (body height and mass, total upper extremity, hand and foot lengths, chest circumference, certain body bread...
journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-2004-817862
更新日期:2005-03-01 00:00:00
abstract::Rhinitis has been demonstrated to impose a significant disease burden upon the general population. We sought to determine the prevalence of rhinitis in athletes; to investigate its relationship with co-existing allergic symptoms; and to quantify the impact of rhinitis on quality of life in the athlete.3 subgroups were...
journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-0042-108200
更新日期:2017-01-01 00:00:00
abstract::This study examined the time course of adaptions in insulin sensitivity (IS) in adolescent boys after acute high-intensity interval exercise (HIIE) and moderate-intensity exercise (MIE). Eight boys (15.1±0.4 y) completed three 3-day experimental trials in a randomised order: 1) 8×1 min cycling at 90% peak power with 7...
journal_title:International journal of sports medicine
pub_type: 杂志文章,随机对照试验
doi:10.1055/s-0043-118007
更新日期:2017-11-01 00:00:00